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42c6e9b9ce
This moves some logic added to EarlyCSE in rL268120 into `llvm::isInstructionTriviallyDead`. Adds a test case for DCE to demonstrate that passes other than EarlyCSE can now pick up on the new information. llvm-svn: 268126
12 lines
273 B
LLVM
12 lines
273 B
LLVM
; RUN: opt -dce -S < %s | FileCheck %s
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declare void @llvm.experimental.guard(i1,...)
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define void @f(i32 %val) {
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; CHECK-LABEL: @f(
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; CHECK-NEXT: ret void
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%val2 = add i32 %val, 1
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call void(i1, ...) @llvm.experimental.guard(i1 true) [ "deopt"(i32 %val2) ]
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ret void
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}
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